If you put "Alliums from seed" into Search you will get a reasonable piece on sowing Allium seeds.

I did it for you.
http://www.growsonyou.com/question/show/2941-growing-allum-from-seed

thankyou Owdboggy :)

I've had a look too Ob, my allium are going to seed I didn't know that they needed a period of cold..... my calla lilies did too

Label where you put them, they look like blades of grass when growing, so the temptation is to pick them out as weeds in a border.

Note that they will take several years to grow big enough to bloom!